reduced sonic-booms?

[CTho9305]

Anyone have any real info on how they did it?

 

[Evadman]

I remember reading a bunch of articles on stuff like this. It revolved around making the shockwave look less like a Z wave. Basicly, the waves were prevented from converging all at the same point so the wave became more rounded.

The undercarage was made to have a different gradiant than the top, more like an actual boat, where the top is flatter, and the curve was all in the undercarrage.

 

[dkozloski]

I heard a report on the radio the other day that said NASA found an even easier way to reduce the sonic boom. They replaced the pointed nose with a flattened shape. Not only was the noise reduced but the drag of the airframe did not appear to be increased. It appears that the supersonic transport may be under discussion again.

 

[Evadman]

Originally posted by: dkozloski
I heard a report on the radio the other day that said NASA found an even easier way to reduce the sonic boom. They replaced the pointed nose with a flattened shape. Not only was the noise reduced but the drag of the airframe did not appear to be increased. It appears that the supersonic transport may be under discussion again.

perhaps the bow wave forms a sort of nose that deflects incoming air. Low speed must suck.

 

[Mday]

considering that major $$$ is spent on shape morphing designs, this should be relatively simple to incorporate into a configuration.

 

[Mingon]

As dkozloski said they moved to a flattened nose, a bullet shaped nose tends to curl up vortices of air in a 'nike' swish type of manner this then develops into the sonic wall as seen on the Thrust SSC. In the same way they have created the hyper speed boats and air wings, the boats work by using a turbulence of bubble to restrict drag and the planes use tiny holes to again kick up small amount of vortices.